Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from CH558685Aexternal-prioritypatent/CH667996A5/fr
Priority claimed from CH346686Aexternal-prioritypatent/CH670947A5/fr
Application filed by Arnold NeracherfiledCriticalArnold Neracher
Priority claimed from EP19860810616external-prioritypatent/EP0232678B1/de
Application grantedgrantedCritical
Publication of ATE62119T1publicationCriticalpatent/ATE62119T1/de